No one would pay for the roads two former states away; that's completely ridiculous.
You understand your own ideology so poorly you're forcing me to defend it. You don't know that nobody would pay for those roads, they might.
The problem is they might not. You're pretending that's a good thing but it's a bad thing. There would probably be few roads, because of the free rider problem which you still have not addressed.
I have come to the conclusion that you are a noob anarcho-capitalist who doesn't even understand the basics yet. You should go learn those before trying to argue in favor of the ideology. You might also want to understand the basics before deciding you're an anarcho-capitalists.